Ethereum Developers officially removed the EVM Object Format (EOF) from future Fusaka network upgrades, citing technical uncertainty and community opposition.
According to Tim Beiko, the Ethereum Foundation’s protocol support lead, the decision was finalized on the Ethereum All Core Developers (ACD) call on April 28th.
The announcement came shortly after Tomasz Stańczak, co-executive director of the Ethereum Foundation, indicated that EOF is part of the Fusaka upgrade scheduled for the third or fourth quarter of 2025.
However, extensive pushbacks from the Ethereum community have prompted us to reevaluate implementations in the upgrade. Critics argued that EOF is too unnecessarily complicated for blockchain networks.
EOF refers to the proposed overhaul of the Ethereum Virtual Machine (EVM). The upgrade consists of several Ethereum Improvement Proposals (EIPs) that aim to make smart contract development simpler, more efficient and developer-friendly.
Why is EOF late?
Beiko explained that the main reason for removing EOF from Fusaka is to avoid the risk of the upgrade timeline.
He emphasized that all client teams agreed to prioritize another notable feature of Fusaka: Peerdas.
Beiko said that ongoing discussions about the various versions of EOF also made adjustments difficult. According to him, these unresolved arguments had hampered developmental progress.
The Ethereum Foundation executive also pointed to a broader issue regarding prioritizing proposals within the ACD process. He said he doesn’t fully understand the meaning of the specific EOF variants supported by many developers. He said the lack of clarity should have been addressed earlier in the proposal stage.
He said:
“It seemed there was widespread support for calls to the Option D variant along the way. Some participants realized they didn’t understand the meaning of this variant.”
For all these reasons, Beiko concluded:
“It seems right for the champion to leave the door to present a case at Gram Stardom while removing the EOF from Fusaka. Here we hope that the process starts by evaluating how the best impact of Ethereum as a whole changes.”
